﻿using System;
using System.Runtime.InteropServices;
using Microsoft.VisualStudio.Shell;
using System.Diagnostics;
using System.Globalization;
using System.ComponentModel.Design;
using Microsoft.VisualStudio.Shell.Interop;

namespace LuaLanguage
{
    /// <summary>
    /// This is the class that implements the package exposed by this assembly.
    ///
    /// The minimum requirement for a class to be considered a valid package for Visual Studio
    /// is to implement the IVsPackage interface and register itself with the shell.
    /// This package uses the helper classes defined inside the Managed Package Framework (MPF)
    /// to do it: it derives from the Package class that provides the implementation of the 
    /// IVsPackage interface and uses the registration attributes defined in the framework to 
    /// register itself and its components with the shell.
    /// </summary>
    // This attribute tells the registration utility (regpkg.exe) that this class needs
    // to be registered as package.
    [PackageRegistration(UseManagedResourcesOnly = true)]
    // A Visual Studio component can be registered under different regitry roots; for instance
    // when you debug your package you want to register it in the experimental hive. This
    // attribute specifies the registry root to use if no one is provided to regpkg.exe with
    // the /root switch.
    [DefaultRegistryRoot("Software\\Microsoft\\VisualStudio\\9.0")]
    // This attribute is used to register the informations needed to show the this package
    // in the Help/About dialog of Visual Studio.
    [InstalledProductRegistration(true, "#110", "#112", "1.0", IconResourceID = 400)]
    // In order be loaded inside Visual Studio in a machine that has not the VS SDK installed, 
    // package needs to have a valid load key (it can be requested at 
    // http://msdn.microsoft.com/vstudio/extend/). This attributes tells the shell that this 
    // package has a load key embedded in its resources.
    [ProvideLoadKey("Standard", "1.0", "Lua Language Pack", "Salec.net", 104)]
    // This attribute is needed to let the shell know that this package exposes some menus.
    [ProvideMenuResource(1000, 1)]
    [Guid(GuidList.guidLuaLanguagePkgString)]
    [ProvideService(typeof(IronyLanguageService),
                        ServiceName = "Lua Language Service")]
    [ProvideLanguageExtension(typeof(IronyLanguageService),
                        LanguageConfiguration.Extension)]
    [ProvideLanguageService(typeof(IronyLanguageService), LanguageConfiguration.Name,
                        LanguageConfiguration.ResourceID,
                        AutoOutlining = true,
                        CodeSense = true,
                        EnableLineNumbers = true,
                        EnableFormatSelection = true,
                        EnableCommenting = true,
                        RequestStockColors = false,
                        ShowMatchingBrace = true,
                        MatchBracesAtCaret = true,
                        QuickInfo = true,
                        ShowDropDownOptions = true,
                        CodeSenseDelay = 100,
                        ShowCompletion = true)]
    [ProvideLanguageCodeExpansion(
             typeof(IronyLanguageService),
             LanguageConfiguration.Name,            // Name of language used as registry key.
             LanguageConfiguration.ResourceID,      // Resource ID of localized name of language service.
             "lualanguage",                    // language key used in snippet templates.
             @"%InstallRoot%\Lua Language\SnippetsIndex.xml",  // Path to snippets index
             SearchPaths = @"%InstallRoot%\Lua Language\Snippets\%LCID%\Snippets\;" +
                           @"%TestDocs%\Code Snippets\Lua Language\Lua Code Snippets")] 
    public class Package : IronyPackage
    {
        /// <summary>
        /// Default constructor of the package.
        /// Inside this method you can place any initialization code that does not require 
        /// any Visual Studio service because at this point the package object is created but 
        /// not sited yet inside Visual Studio environment. The place to do all the other 
        /// initialization is the Initialize method.
        /// </summary>
        public Package()
        {
            Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "Entering constructor for: {0}", this.ToString()));           
        }



        /////////////////////////////////////////////////////////////////////////////
        // Overriden Package Implementation
        #region Package Members

       

        /// <summary>
        /// Initialization of the package; this method is called right after the package is sited, so this is the place
        /// where you can put all the initilaization code that rely on services provided by VisualStudio.
        /// </summary>
        protected override void Initialize()
        {
            Trace.WriteLine (string.Format(CultureInfo.CurrentCulture, "Entering Initialize() of: {0}", this.ToString()));
            base.Initialize();

            // Add our command handlers for menu (commands must exist in the .vsct file)
            OleMenuCommandService mcs = GetService(typeof(IMenuCommandService)) as OleMenuCommandService;
            if ( null != mcs )
            {
                // Create the command for the menu item.
                CommandID menuCommandID = new CommandID(GuidList.guidLuaLanguageCmdSet, (int)PkgCmdIDList.cmdidInsertSnippet);
                MenuCommand menuItem = new MenuCommand(MenuItemCallback, menuCommandID );
                mcs.AddCommand( menuItem );
            }      
        }


        #endregion

        /// <summary>
        /// This function is the callback used to execute a command when the a menu item is clicked.
        /// See the Initialize method to see how the menu item is associated to this function using
        /// the OleMenuCommandService service and the MenuCommand class.
        /// </summary>
        private void MenuItemCallback(object sender, EventArgs e)
        {
            // Show a Message Box to prove we were here
            IVsUIShell uiShell = (IVsUIShell)GetService(typeof(SVsUIShell));
            Guid clsid = Guid.Empty;
            int result;
            Microsoft.VisualStudio.ErrorHandler.ThrowOnFailure(uiShell.ShowMessageBox(
                       0,
                       ref clsid,
                       "Lua Language Pack",
                       string.Format(CultureInfo.CurrentCulture, "Inside {0}.MenuItemCallback()", this.ToString()),
                       string.Empty,
                       0,
                       OLEMSGBUTTON.OLEMSGBUTTON_OK,
                       OLEMSGDEFBUTTON.OLEMSGDEFBUTTON_FIRST,
                       OLEMSGICON.OLEMSGICON_INFO,
                       0,        // false
                       out result));
        }
    }
}